BiDenT project for the control of pine-tree lappet moths

Duration: 1 April 2019 – 31 March 2022

The aim of the project is to develop innovative biological methods for the control of pine-tree lappet moths (Dendrolimus pini), based on their natural parasites, to bring down the population of these forest pests below the threshold of economic damage. Reducing the field density of pine-tree lappet moths serves to eliminate the threat posed by these pests, and significantly reduce anticipated damage to tree stands. The project involves the use of Trichogramma dendrolimi, which is dictated by the fact that these wasps have been successfully reared on a mass scale, and they are commercially available on the market.

Alternatively, other native parasitoids can be considered, provided that effective species are identified from the natural spectrum of parasitoids, reliable methods of their reproduction are developed, and the resulting offspring show sufficient efficacy. One of the main goals of the project is to develop a large-scale spreading method incorporating diverse forms of air and ground application. Currently available technical methods are verified, optimised or adjusted, combined and coordinated. For the selected spreading method, the possibilities and techniques of large-scale production are examined for their feasibility.

Project Partner: Nordwestdeutsche Forstliche Versuchsanstalt, 37079 Göttingen